Copper Nickel Tubes 95/5, 90/10 & 70/30 Marine application

These Copper Nickel tubes & pipes for Marine application are very important for all Industrial fields. The company has experience in these areas and is able to supply these tubes in accordance with most international standards and special customer requirements.

Chemical Properties For Copper Nickel Tubes

Classification

Class

Chemical Composition (%)

Related Standards

Cu

Zn

Pb

Fe

P

Sn

Ni

Mn

Al

As

Other

ISS

KS

JIS

ASTM

BS

DIN

Tough Pitch
Copper

1

99.9
min

ETP

D 5301 C1100

H 3300
C1100

B 188
C 11000

2871
C101
C102

1787
ECU58
ECU57

Phosphorus
Deoxidized
Copper

Low
Residual

99.9
min

0.004-
0.012

DLP

D 5301 C1201

H 3300
C 1201

B 75
C 12000

2871
C106

1787
SW-CU

High
Residual

99.9
min

0.015-
0.040

DHP

C1220

C1220

C12200

C106

SF-CU

Phosphorus
Deoxidized
Arsenic Copper

High
Residual

99.9
min

0.015-
0.040

0.015-
0.040

DPA

C1420

C1420

C14200

C107

CuAsp

Mechanical Properties For Copper Nickel Tubes

Classification

Temper

Designation

Tensile Test

Hardness Test

Outside
diameter
(mm)

Thickness
(mm)

Tensile
Strength
Kgf/mm2

Elongation
(%)

Thickness

Rockwell Hardness

HR30T

HR15T

Tough Pitch
Copper

0

C11000

5-150

0.5-30

26max

25min

50max

–

1/2H

5-150

0.5-25

–

–

–

–

H

5-100

0.5-6

23-28min

3-20min

65-80min

–

40min

0.4min

–

60max

Phosphorus
Deoxidized
CopperPhosphorus
Deoxidized

0

C12000

4-150

0.3-30

21min

0L

4-150

0.3-30

21min

40min

0.4min

–

60max

1/2H

4-150

0.3-25

25-33

30-60

–

H

C12200

4-150

0.3-6

32min

55min

–

0

C14200

4-150

–

21min

–

–

1/2H

4-150

–

25-33

–

–

Arsenic Copper

Cupro Nickel Tubes 95/5, 90/10 & 70/30 Heat Exchangers & Condensers

These Cupro Nickel tubes & pipes for Heat Exchangers & Condensers are very important for all Industrial fields. The company has experience in these areas and is able to supply these tubes in accordance with most international standards and special customer requirements.

Cupro Nickel Tubes 95/5, 90/10 & 70/30 Automobile Industries

The Move To Copper-Nickel Tubing

Copper had been proved since the early days to have many good attributes. It was easy to bend and had very high corrosion resistance, but there was concern about its low corrosion-fatigue strength. When copper-nickel was introduced, it displayed corrosion resistance similar to copper, higher general strength and better fatigue strength. Good formability allows ease of flaring and bending, and although the metal cost is greater than that of steel alternatives, copper-nickel is very attractive in view of its extra life, trouble-free installation and safety/reliability characteristics.

Alloy C70600 is normally supplied as redrawn tubing in the annealed condition. The combination of strength and good ductility give excellent formability.
As copper-nickel is softer than steel, it was first feared that fretting might be a problem. Experience has shown this is not the case.

Corrosion Resistance
For many years prior to its application as a brake tubing material, alloy C70600 had been used in ships, power station condensers and hydraulic lines on tankers, and had displayed excellent resistance to saline conditions. Early tests revealed that copper-nickel has almost the same resistance to burst pressure as steel. In testing, however, when exposed to salt spray over 180 days, steel’s burst strength decreases significantly. The copper alloy remains consistently resistant.
For tubes covered with a moist, salty mudpack for six months, brazed steel was severely corroded resulting in perforation of the tubing wall; whereas, only superficial general corrosion was found on the copper-nickel tubing. ISO 4038 and SAE J1047 include a corrosion resistance requirement referring to ISO 3768 asking for a minimum burst pressure of 110 MPa after 96 hours in neutral salt spray. Swedish requirements include a resistance at least equal to 25µ of zinc. In all cases alloy C70600 easily exceeds the required corrosion resistance.